Classification based on phenotypic character is:

Options

A. Phenetics
B. Phenogram
C. Cladistics
D. Natural

Answer

To solve the question "Classification based on phenotypic character is:", we will analyze each of the provided options step by step.

### Step-by-Step Solution:

1. **Understanding Phenotypic Characters**:
- Phenotypic characters refer to the observable traits of an organism, such as morphology, behavior, and physiological properties.

2. **Analyzing the Options**:
- **Option 1: Phenetics**: This method classifies organisms based solely on their morphological features, without considering their evolutionary relationships. It focuses entirely on observable traits.
- **Option 2: Phenogram**: A phenogram is a graphical representation of the classification based on phenotypic characters. However, it is not a classification system itself; rather, it is a tool used to visualize classifications.
- **Option 3: Cladistics**: This classification system is based on shared characteristics and evolutionary relationships among organisms. It does not focus solely on phenotypic traits.
- **Option 4: Natural**: This system of classification incorporates a wide range of characteristics, including morphology, physiology, biochemistry, and embryology. It is not limited to phenotypic characters.

3. **Conclusion**:
- Since the question specifically asks for classification based on phenotypic characters, the most appropriate answer is **Phenetics**. This classification method exclusively relies on observable traits without considering evolutionary history.

### Final Answer:
The classification based on phenotypic character is **Phenetics**.